* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  width: 340px;
  padding: 16px;
  font-family: 'Segoe UI', Roboto, sans-serif;
  color: #333;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  min-height: 300px;
}